Trimming machine



Feb. 4,19%. 1.. J. BAZZONI TRIMMING MACHINE Filed June 14, 1953 4Sheets-Sheet l QQN //v VE/V mi Feb. 4, 1936' L. J. BAZZONI TRIMMINGMACHINE Filed June 14, 1933 4 Sheets-Sheet 5 Feb. 4, 1936.7 1., J.BAZZONI TRIMMING MACHINE 4 j w H h D 1 s h. t N h w hu o 6 W n I 4 z N T3 7 .J11 3 M. e l, 2 e n u J d e l i F Patented Feb. 4, 1936 UNETETRIMMING MACHINE Application June 14, 1933, Serial No. 675,795

27 Claims.

. an edge of a heel to which the cover has been applied.

In order to perform this and other skiving operations, there isprovided, in accordance with one feature of the invention, an anvil forsupporting the margin of a piece of flexible material, a rotary rasp andmeans for causing the rasp toskive the margin by a series ofstockremoving operations which progress toward the 'edge of the margin.In the illustrated construction the rasp has pointed teeth arranged in ahelix about its periphery so as to feed the material as well as to skivethe margin thereof.

In order to facilitate the feeding of the material, and in accordancewith another feature of the invention, the anvil is rotatably mounted.In the illustrated construction the anvil has the general form of acylinder with its axis substantially at right angles to that of therotary abrading rasp and substantially in tangential relation withrespect to the rasp so as to form with the periphery of the rasp aV-shaped opening into which the margin to be skived is fed.

In slriving the cover margin which projects above the attaching face ofthe heel, it is oustomary to start the skiving out about one-eighth ofan inch from the rim of the attaching face of the heel to which thecover has been applied, whereas in skiving the margin which projectsbeyond the breast of the heel, it is customary to start the skiving outsubstantially at the breast edge of the heel. To this end, in accordancewith another feature of the invention, the gage which engages thecovered face of the heel may be adjustably moved by a treadle toward andd away from the axis of rotation of the anvil in order to position theedge of the heel at varying distances from the V-shaped opening.

These and other features of the invention, including certain details ofconstruction and combinations of parts, will he described as emalong theline IV-IV of Fig. 3;

Fig. 5 is a detail view showing a heel positioned by the gages of themachine while the margin of the cover which projects beyond the breastof the h el is supported by an anvil and is being skived by the rotaryrasp of the machine;

Fig. 6 is a view corresponding to Fig. 5 showing the machine in theoperation of skiving the margin of the cover projecting beyond theattaching face of the heel;

Fig. 7 is an enlarged view of a portion of the rotary rasp; and

Fig. 8 is a perspective View of a heel, the projecting margins of thecover of which have been skived in the illustrated machine.

The illustrated machine may be advantageously used to skive theprojecting margins 23 and 22 (Figs. 6 and 5, respectively) of a cover 24applied to the rear and side faces of a heel 26 preparatory to cementingthe margins and 22 to the attaching face 28 and to the breast face 30 ofthe heel, respectively.

The illustrated machine is provided with a rotatable anvil 32 forsupporting one of the heel cover margins 28, 22, a rasp or tool 34rotatable in a plane disposed at substantially right angles to the planeof rotation of the anvil 32 and constructed and arranged to skive or tobevel the margins 26, 22 of the cover supported by the anvil 32 by aseries of cuts (Fig. 8), each of which progresses toward the edge of themargin being operated upon, and a pair of rotatably mounted gages 36, 38constructed and arranged to engage the covered and the uncovered facesrespectively of the heel for guiding the same and one of the projectingmargins of the cover relatively to the rasp 3B.

The rotary rasp 3 is secured by screws 40 (Fig. 5) to a flange portion42 (Fig. 3) of a shaft 44 which is supported for rotation in a bearinghousing 46 mounted upon the main frame. A pulley .8 (Fig. 3) is keyed tothe opposite end of the shaft 54, the pulley being driven by a belt 59which receives its power from a pulley 52 of an electric motor 5%. Thelower half of the rasp 3G is positioned within a guard 58, the outerside of which is removable for the purpose of changing the rasp.

The anvil 32 which is illustrated as formed integral with the gage 38,and may be referred to as a drum, is secured to an upright shaft 58(Figs. 5 and 6) which is rotatably mounted in a U-shaped arm 6E! havinghub portions 62 (Fig. 3) which are mounted upon a pin 64 carried by abifurcated bracket 56. A driving pulley 68 (Fig. 1) is keyed to thelower end of the shaft 58. The

U-shaped arm 60 and the bifurcated bracket 66 are normally lockedtogether by a pair of screws 6'! which are arranged transverse to theaxis of rotation of the shaft 44 and which are in threaded relation withthe U-shaped arm 50 and have their end faces in engagement with thebifurcated bracket 65.

The lower portion I0 (Figs. 5 and 6) of the side surface of the drum isinclined toward the axis of rotation of the anvil 32 from the point I2of substantial contact of the rasp 34 and the anvil 32 which may be saidto have a cylindrical surface arranged in substantially tangentialrelation with respect to the rasp. The upper corner of the anvil 32 isbeveled to facilitate the bending of the margin of the cover of the heelguided by the gages 35, 38 into a V-shaped opening "I l (Fig. 2) formedbetween the anvil 32 and the rasp 35. The opening through which thecover is fed during the skiving operation may be said to be V- shaped intwo directions disposed at substantially right angles to each other.

In order initially toadjust the anvil 32 to-- ward and away from therasp or scraping tool 34,. the bifurcated bracket 66 to which theU-shaped arm 50 is clamped by screws 61, is mounted for pivotaladjustment upon upper and lower flat surfaces (Fig. 4) of the bearinghousing 46 about a bolt 18 carried by the bearing. Such adjustment iseffected by turning screws I6 which are spaced in the general directionof the axis of the shaft 40 and are in threaded relation with thebifurcated bracket 65 and have their ends in engagement with the bearinghousing 40. To assist the operator in making this adjustment, thebifurcated bracket 05 is provided with an arcuate slot (Fig. 3) throughwhich passes a screw 82 which is in threaded relation with the bearinghousing 46. When it is desired to adjust the anvil 32 toward or awayfrom the rasp 34 the screws vI6 are loosened and the bifurcated arm 65,after being turned to its proper angular position about the bolt 18 isheld in place by the screw 82, after which the screws I6 are set upagainst the bearing housing 05. Lubricant may be supplied to a bearing84 of the shaft 44 through a wick 88 the lower end of which is insertedin an oil chamber of the housing 40.

The rotatable gage 36 which has a general shape of a bowl encloses theupper part of the rasp 34 and serves as a guard. Secured to the gage 36is a shaft 9!) which is rotatably mounted in a bearing 92 provided witha sleeve portion 94 journaled upon a pin 96 supported by a bearingportion 98 of the main frame. A gage driving pulley I00 is keyed to theupper'end of the shaft 90.

The pulley 68 which rotates the combined anvil 32 and gage 30 is driventhrough a belt I02 (Fig. 1) by a pulley I00 secured to the lower end ofa countershaft I06. The countershaft I 06 is journaled in bearinghousings I08 supported by a standard I I0 of the main frame. The pulleyI 00 through which the gage 36 receives its power is driven by a beltII2 which is in driving relation with a pulley I Hi secured to the upperend of the countershaft I05.

The countershaft I05 is provided with a gear II 5 (Fig. 3), which mesheswith a worm H8 of a shaft I20 mounted in bearing housings I22 and I24(Fig. 1). Mounted upon the shaft I20 is a driven clutch member I26 whichcarries a pin I28 arranged to pass through an elongated slot I30 formedin the shaft I20. With such an arrangementgit will be noted that thedriven member I26 is rotatable with the shaft I20 but is movablelengthwise of the shaft. A pulley I32 which is formed integral with adriving clutch member I30 is mounted for rotation upon the shaft I20 andis normally in driving relation with the driven member I26 which isurged against the driving member I34 by a spring I30. The machine isprovided with a treadle operated cam I38 having a cam surface I 30 whichis arranged to engage one end of a rod I42 mounted for reciprocation inan axially extending recess of the shaft I20 and the other end of whichengages the pin I28 carried by the driven member I26. Movement of thecam I38 causes the rod I42 to force the driven member I26 to the rightagainst the pressure of the spring I36 thereby to throw the member I26out of driving engagement with the driving member I 34. The pulley I32is rotated by a belt I45 (Fig. 3) which is driven by a pulley I48 of theelectric motor 55.

As above stated, in skiving the margin 20 (Fig. 6) which projects beyondthe attaching face 28 of the heel, it is desirable that the skiving cutshall start about one-eighth of an inch from the rim of an attachingface, whereas the skive formed on the margin 22 (Fig. 5) which projectsbeyond the breast of the heel shall start substantially at the breastedge of the heel. Accordingly, the gage 36 is mounted for swingingadjustment about the pin 96 in order to adjust such gage toward and awayfrom the axis of rotation of the anvil 32. The gage 35 may be readilyswung by the operator alternatively to the positions shown in Figs. 5and 6, with respect to the anvil 32 by lowering and raising atreadle-operated rod I50 (Fig. 2) which is connected to an extension I52of the sleeve 92.

Upward movement of the rod I50 causes a lug I55 of the extension toengage a screw I56 which is adjustably mounted in the main frame anddownward movement of the rod I50 moves another lug I58 into engagementwith a screw I60 which is also adjustably mounted in the machine frame.The screws I50, I60 may be initially adjusted to control theswingingmovement of the gage 36 in accordance with the position at whichit is desired to form the bevel on the projecting margin of the cover tobe skived.

In skiving margins of flexible material, it is sometimes desirable tovary the angle of the skive and accordingly the anvil 32 may beangularly adjusted about the axis of the pin 64 (Fig. 4) which axis, asalready stated, is disposed in parallel relation with respect to theaxis of rotation of the rasp 3t and passes through the bottom of thev-shaped opening I I. Such adjustment may be readily effected by turningscrews 61, which are carried by the U-shaped arm 60 and the ends ofwhich engage the bifurcated bracket 66, in opposite directions until thedesired adjustment has been made.

In order to expedite the feeding of the margin through the V-shapedopening I4 the rasp 34 comprises a plurality of pyramidal teeth I62(Fig. 7) arranged in the form of a helix. To assist in feeding themargin into the V-shaped opening M, the end of the rasp 34 to which thework is first presented is provided with a conical surface In order toperform the skiving operation the operator, after making the necessaryadjustments, engages a covered face of the heel with the gage 35 andrests the face beyond which the cover projects against the gage 38. Asthe heel is guided past the cutter from left to right (Fig. 1)

by the gages the projecting margin which passes through the space formedbetween the gages 36, 38 and through the V-shaped opening 14, is forcedby the rasp 34 against the cylindrical face of the anvil 32 and isskived by a scraping out which progresses toward the edge of the margin.The rasp 3d, thus, not only'straightens out the margin as it forces thesame against the anvil 32 but also, due to thespiral arrangement of theteeth, assists in feeding the margin past the anvil thereby to insurethat there is no wrinkling of the flap during the skiving operation.

The machine of the present application is similar in. many respects tothe machine of application Serial No. 675,794, filed June 14, 1933, inmy name, and all subject-matter common to the two applications isclaimed in said above-identi fied application.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is:

l. A trimming machine having, in combination, a rotary anvil forsupporting the margin of a piece of flexible sheet material fed over it,a cooperatingstock-removing tool, and means for rotating said tool in aplane disposed at an angle to the plane of rotation of the anvil and ina direction, to skive the margin by a series of operations. whichprogress toward the edge of the margin.

2. In a trimming machine, a rasp mounted for rotation about an axis, ananvil having a workengaging face constructed and arranged to be engagedprogressively by an elongated projecting margin of a piece of flern'blematerial secured to a block, and means constructed and arranged to beengaged by the block for guiding said projecting margin generallylengthwise of the axis of rotation of said rasp to skive the margin by aseries of cuts which progress toward the edge of said margin.

3. In a trimming machine, a rasp mounted for rotation about an axis, andan anvil having a work-engaging face curved about an axis disposed at asubstantial angle to the axis of rotation of the rasp, said rasp beingconstructed and arranged to skive to a feather edge a projecting marginof .a cover, which is attached to a heel and is supported by the anvil,by a series of cuts which progress toward the edge of the margin.

4. In a trimming machine, a rasp rotatable about an axis, and an anvilrotatable about an axis disposed at substantially a right angle to theaxis of rotation of the rasp, said anvil being provided with awork-engaging face constructed and arranged to be progressively engagedby an elongated margin of a piece of flexible material which forms thecover of a heel to brace the same against the action of the rasp therebyto skive the margin to .a feather edge by a series of cuts each of whichprogresses toward the margin of the cover.

5. A trimming machine having, in combination, a rotary anvil shaped andarranged to support a. cover margin projecting beyond an edge of a heelto which the cover has been .applied, a rotary rasp arranged almost toengage the anvil, and gages for positioning the heel and its projectingmargin relatively to the anvil, opposed portions of the anvil and therasp being mounted for movement in planes disposed substantially atright angles to each other.

6. A trimming machine having, in combination, a rotary anvil forsupporting a margin of V, a cover projecting beyond an edge of a heel towhich the cover has been applied, a rotary rasp arranged almost toengage the anvil, and gages for positioning the heel and the projectingmargin of said cover relatively to the anvil, opposing.

portions of the anvil and the rasp being mounted for movement in planesdisposed at substantially right angles to each other, said rasp beingconstructed and arranged to feed said margin past the anvil as it skivesthe cover margin supported by said anvil.

'7. A trimming machine having, in combination, a scraping tool, and arotary anvil provided with a face constructed and arranged to formwiththe scraping tool, an opening which is V- shaped in two directionsdisposed at substantial angles to each other.

8. A trimming machine having, in combination, an anvil provided with acylindrical surface for supporting a margin of flexible material,

and a rotary rasp arranged substantially in engagement with said surfaceto provide a V- shaped opening into which said margin may be fed, saidanvil being rotatable about an axis which lies substantially in theplane of rotation of the rasp.

9. A trimming machine having, in combination, a rotary scraping tool,and a rotary anvil constructed and arranged to form with the tool anopening which is V-shaped in two directions disposed at substantialangles to each other, said tool comprising a plurality of teetharrangedin a helical series.

10. A trimming machine having, in combination, an anvil for supporting aflexible heel cover margin which projects beyond one of the edges of aface of a heel to which the cover has been applied, a rotary raspcomprising a plurality of teeth arranged in a helical series andconstructed and arranged for cooperation with the anvil to skive saidmargin by a plurality of cuts each of which progresses toward the edgeof said margin, and means for guiding the heel relatively to the rasp todetermine the location of the trimming cuts.

11. In a trimming machine, a rasp mounted for rotation about an axis andprovided with teeth arranged in a helical series, an anvil mounted forrotation about an axis disposed at a substantial angle to the axis ofrotation of the rasp, said anvil being constructed and arranged topresent the margin of a flexible piece of covering material secured to aheel progressively to the rasp, and means for operating the rasp tocause the margin supported by the anvil to be skived by a series of cutseach of which progresses toward the edge of the margin.

12. In a trimming machine, a rasp movable in a predetermined path, ananvil for supporting the projecting margin of a cover secured to a heelagainst the rasp, and a member constructed and arranged to beprogressively engaged by the heel and to guide said margin in a pathdisposed at a substantial angle to the path of movement of the raspthereby to skive the margin by a series of cuts each of which progressestoward the edge of the margin of the cover.

13. A trimming machine having, in combination, a rotatable anvil forsupporting a margin of a flexible cover which projects beyond one of theedges of a face of a heel to which the cover has been applied, ascraping tool rotatable in a plane disposed at substantial right anglesto the plane of rotation of the anvil and constructed and arranged toskive the margin of the cover supported by said anvil by a series ofscraping cuts which progress toward the edge of said margin, and meansconstructed and arranged to engage simultaneously both the covered faceand another face of the heel for positioning the heel relatively to thecutter thereby to determine the location of the trimming cut.

14. A trimming machine having, in combination, a rotary drum forsupporting a margin of a flexible cover which projects beyond one of theedges of a heel to which the cover has been applied, a gage to engage acovered face of the heel, said drum having a surface arranged to engageanother face of the heel, and a rotary tool constructed and arranged toforce the margin of the cover against the drum to skive the projectingmargin fed past the drum to a predetermined width.

15. A trimming machine having, in combination, a rotary tool providedwith a face having stock removing projections thereon, and a drumrotatable about an axis which lies substantially in the plane ofrotation of the tool, said drum being arranged adjacent to the face ofthe tool to form a V-shaped opening through which a projecting margin ofa cover attached to a heel may be moved thereby to skive said margin toa 'feather edge.

16. A trimming machine having, in combination, a rotatable drum providedwith a surface for supporting the projecting margin of a cover securedto a face of a heel, .a gage for engaging the covered face of the heel,said drum comprising a surface arranged to engage the face of the heelbeyond which said cover margin projects,

and a rotary tool arranged adjacent to said margin supporting surfaceand constructed to skive the margin of the cover by a series of scrapingcuts each of which progresses toward the edge of the margin.

17. A trimming machine having, in combination, a pair of rotatable gagesspaced from each ing.

other and constructed and arranged to engage angularly disposed faces ofa heel beyond one of the edgesof which projects a margin of a coverwhich has been applied to the heel, an anvil to support the projectingmargin of the cover, and a rotary tool having a plurality ofcircumferentially spaced teeth movable in a path which is disposedsubstantially in tangential relation with respect to said anvil therebyto skive the margin supported by the anvil.

18. A trimming machine having, in combination, a rotary tool providedwith a roughened face, .a drum rotatable about an axis which liessubstantially in the plane of rotation of the tool, said drum beingarranged adjacent to the roughened face of the tool to form awedge-shaped opening through which a projecting margin of I a coverattached to a heel may be moved thereby to skive said margin to afeather edge, and means for angularly adjusting said drum about an axisdisposed substantially parallel to the axis of rotation of the tool andpassing substantially through the bottom of the V-shaped open- 19.trimming machine having, in combination, a pair of rotatable gagesspaced from each other. and constructed and arranged to engage angularlydisposed faces of a heel beyond one of the edges of whichprojects amargin of a cover which has been applied to the heel, an anvil tosupport the projecting margin of the cover, a rotatable scraping toolmovable in a path which is disposed in substantially tangential relationwith respect to the anvil thereby to skive the margin supported by theanvil and fed past the same, and means for positively rotating the gagesand the anvil to facilitate the feeding of the cover past the tool.

20. A trimming machine having, in combination, a rotary anvil forsupporting a margin of a cover projecting beyond an edge of a heel towhich the cover has been .applied, a rotary rasp arranged in tangentialrelation with respect to the anvil for skiving the margin to a featheredge, gages spaced from each other and con-; structed and arranged forengagement with the covered face of the heel and the face of the heelbeyond which the cover margin projects respectively, said raspcomprising a series of teeth arranged in the form of a helix for feedingsaid margin past the anvil, and means for moving the gages to feedthe-heel past the anvil.

21. A trimming machine having, in combination, a rotary drum forsupporting a margin of a cover which projects beyond an edge of a heelto which the cover has been applied, a gage to engage a covered face ofthe heel, said drum having a surface .arranged to engage'another face ofthe heel, a rotary tool constructed and arranged to force the margin ofthe cover against the drum thereby to skive the projecting margin of thecover to a predetermined width, and' means for adjusting the gagerelatively to the drum to vary the position of the skive withrelalengthwise of the axis of rotation of the tool and 7 passessubstantially through the bottom of the v-shaped opening thereby to varythe shape of the opening.

23. A trimming machine having, in combination, a rotary rasp and arotatable anvil constructed and arranged to form an opening which tapersin two directions disposed substantially at right angles to each otherand is shaped to receive a margin of .a piece of flexible material, andmeans for rotating the rasp to cause the margin fed through the openingto be forced against the anvil and thereby to be beveled by a series ofscraping cuts.

24. A trimming machine having, in combination, a rotary rasp and ananvil arranged to form a V-shaped opening for receiving a margin of acover which projects beyond one of the edges of. a face of a heel towhich the cover has been applied, said rasp comprising a plurality ofteeth arranged in the form of a helix, means for rotating the rasp tocause the margin fed through the V-shaped opening to be forced againstthe anvil and thus to be skived to a feather edge by scraping cuts whichprogress toward the bottom of the opening, and gages constructed andarranged to engage angularly disposed surfaces of the heel for guidingthe same and the projecting margin of its cover relatively to the rasp.

25. A trimming machine having, in combination, an anvil for supportingaflexible margin of a cover which projects beyond an edge of a heel faceto which a cover has been applied, a rasp mounted for movement in apredetermined path, means for guiding the heel past the rasp, and meansfor moving the rasp along said path to cause the same to skive themargin supported by the anvil and guided by said gages.

26. A trimming machine having, in combination, .an anvil provided with acylindrical surface for supporting a margin of flexible material, and arotary rasp arranged for substantial engagement with said surface andshaped to form with the anvil an opening having the general shape of aletter V and through which said margin may be fed, said anvil beingrotatable about an axis which lies substantially in the plane ofrotation of the rasp and being adjustable about an axis which isdisposed substantially parallel to the axis of rotation of the rasp andpasses through the bottom of said opening.

27. In a trimming machine, a rasp rotatable about an axis, an anvilmounted for rotation about an axis disposed at a substantial angle tothe axis of rotation of the rasp, said anvil being constructed andarranged to support the projecting margin of a cover secured to a heelagainst the rasp, and a member constructed and arranged to beprogressively engaged by the heel to guide the margin in a path disposedgenerally lengthwise of the axis of rotation 01' the rasp and past therasp to skive the margin of the cover by a series of cuts each of whichprogresses toward an adjacent edge of the margin of the cover.

LEWIS J. BAZZONI.

